Huffington Post- Texas Tech University law professor Richard Rosen said that to convict
Manning of aiding the enemy, the government 'must prove that Manning knowingly gave
intelligence information to the enemy. In other words, it must show something more
than Manning should have known that the intelligence might reach al Qaeda. It may,
however, show actual knowledge by circumstantial evidence.'

FORT MEADE, Md. -- As military prosecutors wrapped up their case against Bradley Manning
just before the Fourth of July, their most serious charge against the Army private
first class -- aiding the enemy -- rested tenuously on circumstantial evidence.

...

Texas Tech University law professor Richard Rosen said that to convict Manning of
aiding the enemy, the government "must prove that Manning knowingly gave intelligence information to the enemy. In other words, it must show something
more than Manning should have known that the intelligence might reach al Qaeda. It
may, however, show actual knowledge by circumstantial evidence."